Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences’ Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.

Nominal Reference Values:

• 1.50µm particles packaged as 2.5% aqueous suspension.
• 1.349 x 10¹⁰ beads/mL
• Excitation max. = 441nm  &#160
• Emission max. = 486nm